Adding important details to python install instructions.

Author: tarehart

README.md

@@ -3,11 +3,13 @@ Example of a python bot using the RLBot framework
 
 ## Instructions
 
-1. Make sure you've installed Python 3.6 or newer
+1. Make sure you've installed [Python 3.6 64 bit](https://www.python.org/ftp/python/3.6.5/python-3.6.5-amd64.exe). During installation:
+   - Select "Add Python to PATH"
+   - Don't opt out of pip
 2. Open Rocket League
-2. Double click on run.bat
+3. Double click on run.bat
 
 ## Changing the bot
 
 - Bot behavior is controlled by `python_example/python_example.py`
-- Bot appearance is controlled by `python_example/appearance.cfg`
+- Bot appearance is controlled by `python_example/appearance.cfg`